JBL MI-10 (1967–1969)

Little is documented about the JBL MI-10, and nearly everything known comes from a single source. The record shows a two-way mixing monitor from JBL's "MI" (Music Industry) series, produced from roughly 1967 to 1969 and intended for studio or control-room use.

The MI-10 paired a 12-inch 122A woofer with the 1-inch 075 ring-radiator tweeter — the same driver combination JBL used in the 212. It was a sealed, acoustic-suspension design crossing over at 2.5 kHz, rated at 16 ohms impedance with 25W power handling and 92 dB/W/m sensitivity. The cabinet measured 15.75 × 15.75 × 11 inches and weighed 32 lbs. Frequency response was spec'd at 50 Hz–15 kHz.

That's essentially the whole record. No original price, no terminal details and no cabinet finish information have surfaced. The source material names the 122A and 075 drivers outright, so those are the ones to verify on a used unit. Period publications from the 1980s and 1990s reference the MI-10 in studio and monitoring contexts (Recording-Engineer, June 1983, p.69; DB Magazine, November 1988, p.38).

• Type: 2-way, sealed (acoustic suspension)
• Drivers: 12" 122A woofer, 1" 075 ring radiator
• Crossover: 2.5 kHz
• Impedance: 16 ohms
• Power handling: 25W
• Sensitivity: 92 dB/W/m
• Frequency response: 50 Hz–15 kHz
• Dimensions (H×W×D): 15.75" × 15.75" × 11"
• Weight: 32 lbs

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